Means for controlling the gas pilot lights of water-gas machines



Jan 9",, 1923., 1,4419%. v T. S. BARLOW.

MEANS FOR CONTROLLING 'EHE GAS PY ILOT LIGHTS OF WATER GAS MACHINES.

' HL ED {MAY 24. 19211.

T -IADDEUS 5.5AELO a cnttnll lit i ll in Mt can lift i l l still imit will artisans iron coivrnottin'e tlElZlEl one-rater Etienne on Warren-one incentives application llletl Ma r fi l,

To all whom c't mag concern: V

Be it known that ll 'lfirzinnnns ft; Ban Lovv a citizen otthe Unit-eel States, and resident oi? the city of lllevv Yorln, borough of Manhattan; county and. lltate or} New York, have invented certain new ancl itse :Eul Improvements in Means for Controlling the Gas l?ilot Lights of l llatenGas ll/lav chines, of, which the following is a lull, clear, and exact description? a The present invention relates to means for controlling the gas pilot light ol' water gas machine a I i Une ob'ect oi the invention is to provide means whereby the pilot light of the supine heater may be reduced when the stack valve is closed and increased upon the opening oi the stack valve or during a blow. ln Water gas machines it is customary to em ploy a gas light adjacent to the takeoff times for the purpose orconsuming combustible gases Which are discharged during the blow, and also suchcombustible ggases as may leakfroin the stack valve when closecl. lllot only such a light used tenthe pin pose of igniting combustible gases discharged from the stack or which leak there item, but itis also necessary to enable the operator to determine Whethenor not he is using" enough secondary air during the ,blow. Such lightsrefetrecl to herein as a pilot light, as heretol'cre used, have en1- pl-oyecl constant llovvancl a constant Elaine at all times, and no effort hasheen made so tar as ll ainfaclviseclot the prior state oi? the art, to reduce the quantity of gas consumecl by suehlig'hts or burners during the run or when the stack valve is eloseclu The result, therefore, has been that s eh burners consume more gas than is requitedl. a I a a A; further object of the invention therelfore isto provide means whereby the flow of gas tothe pilot lightniay be controlled by interconnecting mechanism operated by the means employed to open and close thexstach valve, so arranged that as the stash valve is opened the flow of gas tothc pilot light and the flame proclncedthereby Will be increased,- ancl when the staclt valve is closecl the flow of gas to the pilot light ancl the flame proelucefl thereby will :be decreased" jihliurther object is to QTOVlClB a guard for so constructeol as to prevent the lllerial lilo. l'llhllllt'.

accidental entingnishinent oi the pilot light all times and especially clurine" the blow, when the velocity of the issuing UO lIllJllSlJl lillG or inert is greatest, permitting the use oil. a snialler Elaine (luring the blow? V i D The invention therefore consists of a burner located acljacent to thestach valve opening with n'ieans to supply gas to said burner, and means to control the supply of thereto to reduce or increase the flow and hence, Wlllll a guarol surrounding and protecting the saicl burner.

"l he invention further consists of a gas burner locatecl adjacent to the stack valve opening cncl inc-ans Whereby the llovv of gas to said burner may be automatically con trolled, anclvvliereby it shall be increased upon the opening of the stack valve ancl clecreaseclnpon the closing; of the stacl: valve. opening, which light is kept burning" at all The invention further consists cl a burner located atliacent to the sta 3h valve opening, and means Wherehythe flow of to saicl burner controlletl directly by the means controlling the opening ancl closing ofthe stacltvalve and it further consists of the devices and combinations of devices which will he hereinafter described and claimed.

llhe invention isillustrateil in the LCCOH1 drawing in which Fig. l is a View in per. )cctive ancl ows the upper part of the superheater oi a Water gas machine with my invention applied thereto,

Fig 2 shows an enlargecl view of the burner ancl its guard portions being shown in (liainetrical vertical section extending longitudinally through the burner and guarcl. 1 i i Fig. 3 shows in elevation one form of throttle valve which may be usecl to con trcl the flow of and the flame proclucecl by the burner. a

iinilar reference characters Will be one plo vecl throughout the specification and drawing to (lesieaiatc corr iponclinn' parts.

Referring to the tlra shows the upper portionbt a a perheater oil a "\vellknown watc nialtnlgjg machine; (5) is the take-oil having an opening (0) 5 and is a :llarinp; shield surrounding; the up tatetl therein by any suitable means, as by means of the crank (it), whereby the valve (6) is raised or lowered to open or close the opening in the take-oil (b). The flaring shield (cl) is cut out as shown at to permit the freedom of movement of the cover (6), and as usual in such devices a conductor (j) leadsfrom the branch or stem of the take-off T (b) to conduct the illuminating or combustible gas to a gas holder or any other apparatus intermediate the gas generator and the ga s holder. In' the operation of such an apparatus it is required that the valve, ((3) be frequently operated to close or open the take-ofi' T (b) it being closed during the run of the apparatus and open during the blow of the apparatus.

It has been found necessary to maintain a lighted burner in close relation to the take-ofi' T opening or stack valve, for the purpose of igniting the combustible gases discharged from the opening in the stack either during the Frun caused by leakage, or while blowing, and obviously this gas flame must be lighted at all times and there must be no danger of its accidental extinguishment, so that it has been customary to maintain a relatively large flame, one not :easily extinguished by a blast, and this has been the cause of considerable loss and expense. Inasmuch as a relatively small flame is sutlicient to take care of the leakage of combustible gas when the stack valve 1s closed,

I have provided means whereby during the running period. or while the stack valve closed, the gas flame and supply of gas to the burner is materially reduced and automatically increased when the stack valve is raised or during the blowing operation.

For this purpose I. provide a burner (1), fitted within a guard (2) the burner and guard passing through the shield (d) as indicated in Fig. 1 in the drawing, wherein the shield (d)is shown broken away to illustrate the position of the burner and guard with relation to the shield and stack opening. The burner is carried at'the forward end of a pipe which pipe receives combustible gas from any suitable source of supply. The pipe (3) is-fitted with a valve (4-) provided with any usual form of closure whereby the flow of gas to the burner may be reduced or increased as desired. In the illustrated embodiment the valve (4) has a cut-oil (5) provided with a small aperture or bypass (6). As this form of valve is one wellknown, it is unnecesary to further describe it. The valve is operated by means of a lever arm (7) pivotally connected to a link (8) which in turn is pivotally connected to an arm (9) which is fixedly attached to the rock shaft (f) by means of a clamp (10). The foregoing arrangement is such that the rocking of the shaft (7) to raise and lower the stack valve (6) will automatically operate the valve (4:) to increase or reduce the flow of gas to the burner (1); it being understood that it is so-assembled that as the rock shaft (f) is turned to raise the stack valve (6) and open the take-oft T (b) the flow of gas to the burner will be increased, and as the rock shaft (7) is turned to close the take-off T (b) the flow of gas will be reduced. The result of the foregoing arrangement is that while there is a light constantly burning in close proximity to the opening (0) the flow of gas to the burner and the flame will be materially reduced when the stack valve (6) closes theopening (0) while still leaving a flame burning of sutlicient volume to ignite the leakage of combustible gas, and when the stack valve (0) is opened during the blowing operation, the flow of gas to the burner (1) and the flame produced in the guard (2) will be materially increased.

The guard (2) consists of a casting which may be cylindrical in cross section as shown, and it is open at each end, one end being connected by means of the arms (11) to a boss interiorly screw-threaded as at (13) whereby the guard may be afiixed to the threaded portion (14) of the pipe (3) carrying the burner A suitable lock nut (15) is provided whereby the guard may be held in adjusted position on the pipe (3) with the burner (1) projecting to a greater or less extent within the open chamber (16) of the guard (2). As shown in Fig. 2 of the drawing, the burner (1,) projects for some distance within one end of the guard (2) sufficiently so that the accidental extinguishment of the flame is prevented. In order to insure that air and discharged gases, or a blast, .shall not pass through the guard with sufficient force to extinguish the flame of the pilot light, I have provided within the chamber (16) of the guard (2) batllc plates (17) which project from the interior surface in a forward direction at an angle of substantially degrees, each covering slightly more than one-half of the diameter of the chamber (16),and as shown, these baflie plates (17) project forwardly and extend from opposite surfaces so that their free edges overlap and cross a. line corresponding to the central horizontal axial diameter. By this arrangement the flame may readily pass between the bafile plates and project at the outer end of the guard (52). but will be protected from any air or blast which may enter the guard (2) thus the flame will be effectively protected from accidental extinguishment.

In the operation of the apparatus the take-off T is opened or closed in the usual manner during the run, and for the purpose of blowing, and obviously as the stack valve operating mechanism is operated, the valve will be operated simultaneously therewith by means of the interlatrines connecting mechanism, whereby the tlow oi to the burner will be increased as the stack valve is raised,ai1d decreased as the stack valve is lowered; thus increasing and diminishing the size of the flame, leaving at all times, however, a flame oit sufiicient size toignite the combustible gas which might be likely to escape during the run, while during the blowing operation. with the stack valve open, the flame will be materially increased so as to insure the burning oil the combustible gases which issue at high velocity.

l-laving described the construction, organination, and mode t operation of my invention as illustrated, ll claim:

l. in combination with a water gas machine, a gas burner located adjacent the take-oil "ll opening, means for conducting a supply oil gas to the said burner, and means for regulating the dew ct to said burner so as to increase or diminish the same as the stack valve is opened or closed.

2. In combination with a water gas machine, a gas burner located adjacent the takeott "ii" opening, means for conducting a supply oi to said burner, and means for automatically regulating thetflow oil gas to said burner so as to increase or diminish the same asthe stack valveis opened or closed.

3. lln combination with a water gas machine, a gas burner located adjacent the take-oil 'li opening, means for conducting a supply of gas to said burner, a, valve for regulating the flow oi gas to said burner, and connections between the means for opening and closing the take-oil l and the said valve, whereby the valve is operated by the stack valve operating means.

l. lln combination with a water gas machine, a gas burner located adjacent the take-oil "ll opening, means for regulating the flow of gas to said burner so as to lncrease a lit-2m or diminish opened or closed, and a guard surroundn the said burner, said guard provided with means tor preventing the eirtinguishment oil the flame.

5, in combination with the take-0d ll ot water gas machine, a gas burner in said l, means for regulatingthe supply of gas thereto to increase or diminish the flame, a cylindrical guard surrounding the said burner, said guard being open at each end provided upon its inner surface with battle plates extending" in an inclined direction towards one end from opposite surfaces, the free edges oi. the baffle plates overlap ping a longitudinal axial line.

6. in combination. with the take-oft l of a water gas machine, a gas burner in said "ll", means tor regulating the supply of gas thereto to increase or diminish the flame, a

guard surrounding the said burner, said guard being open at each end and provided upon its inner surtace with a battle plate ex tending partially across the chamber within said guard 7. in combination with the take-oil 'll" of a water gas machine, a burner having its outlet in communication with said take-cit to ignite gas passing through the take-oil, and guard means between the tip oi the burner and the interior of the l" to prevent same as the take-oil "l" 

